The hypothalamic magnocellular system in the domestic fowl. Study on semithin sections |
| |
Authors: | J Tolivia D Tolivia M Alvarez-Uría |
| |
Institution: | Departamento de Morfología Microscópica, Facultad de Biología y Medicina, Universidad de Oviedo, Espa?a. |
| |
Abstract: | Neuronal characteristics and location of the neurosecretory, magnocellular, fuchsin-paraldehyde-positive (FA+) system of the fowl are described at the light-microscopic level on serial semithin sections. Three nuclei make up this system, the nucleus supraopticus, n. magnocellularis interstitialis and n. paraventricularis. These nuclei display magnocellular neurons, not showing a parvocellular component. The neurons of the three nuclei showed a scattered pattern of distribution and a dense surrounding neuropil. Groups formed by magnocellular neurons were found in the three nuclei and groups formed by one magnocellular and a parvocellular neurons were only found in the n. magnocellularis interstitialis and in the n. paraventricularis. The presence of neurons in apposition to blood vessels was frequent in the magnocellular FA+ system of the domestic fowl. |
| |
Keywords: | |
|
|